But there was also no Balrog, which is something I think Gandalf cared about more than goblins.
As far as the Fellowship traveling East, it came down to the lesser of all the other evils. Or just process of elimination.
-Boromir said they should make for the Gap of Rohan, but it was closed to them because of Sauruman's power in the area and the Eye looking West. Also, there were no real hospitable places to provide them with some up-to-date news on how fast Gondor was going to get beaten or some food or a bed(that would be Lothlorien). If The Fellowship could get across the Fords of Isen, would Theoden have accepted them under Wormtougne's power? And if they had deposed Grima, he would just tell Sauruman that the Ringbearer or Gandalf was there, and Sauruman's army was less than 100 miles away I believe. Then they would be tailed through the Entwash and Anorien until they reached the Drugs or Minas Tirith.
-It was also mentioned one about taking "the western way" by coming near Druath Iaur and passing around the western end of the White Mountains, and traveling through the fiefs of Gondor along the coast. This would take too much time, and although they would be in hostile territory, there was no land that they could be assured traveling in secret, because there were no places like Rivendell or Lothlorien that they could get the news and not have to worry about being revealed.
-And the High Pass? It wasn't really out of the way, and there wouldnt be more goblins than there were at the time of TH, and the actual pass dosnt even go under ground. They underground passage was just a cave network that the Thorin and Co tried to sleep in. It did however, stick them out in the Wild, and it would not take long to send a Ringwraith from Dol Gulder up the River if they were revealed to Sauron. Like Formedacil said.
The biggest problem of the High Pass was that they did not have to decide direction until it was behind them. They had already planned to take the Redhorn Pass (which compared to the alternatives was obvuously the most direct). Thus Moria was already less than 20 miles away and the next direct. They had to gamble danger with speed, and I think that if Gandalf had told everyone that a balrog was in there and they understood, they wouldnt have been as Gimli-eager, but they still would have felt it was the only "way."
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